Specifications

58 PCA-6143P User's Manual
Installing DRAM (SIMMs)
You can install anywhere from 1 MB to 32 MB of on-board
DRAM memory using 256 KBx36, 1 MBx36 or 4 MBx36 SIMMs
(Single In-line Memory Modules). Access time should be 80 ns or
less.
Memory installs in two 72-pin SIMM sockets. See the figure on
page 5 for help identifying the banks. You must fill both sockets,
and both SIMMs must be of the same capacity, i. e. you cannot
mix 256 KB SIMMs with 1 MB SIMMs. The following table
shows the memory size for different SIMM capacities:
System memory configuration SIMM size Pcs
1 MB 256 KB x 36 1
2 MB 256 KB x 36 2
4 MB 1 MB x 36 1
8 MB 1 MB x 36 2
16 MB 4 MB x 36 1
32 MB 4 MB x 36 2
The procedure for installing SIMMs appears below. Please follow
these steps carefully.
Warning! Completely disconnect power from the system
before you install SIMMs. Remove the CPU card
from the chassis. .
Caution! Properly ground yourself (we recommend a
grounding wrist strap) before you touch the CPU
card or SIMMs. Both are very susceptible to
damage from static discharge. Place the card
and SIMMs on a static-dissipative surface or into
a static-shielding bag when they are not installed.
1. Locate the CPU cards memory banks, shown in the figure in
Chapter 1 (page 5).